I believe a lot of people are turned off by "organized religion" however it does not mean they don't believe in God or a higher power.
Organized religion is often very political. You don't need a "middle man" to talk to God. In fact many nations used religion as a government system for ruling their citizens.
For a lot of people there are some serious questions about what is in the bible. Essentially we are being asked to (trust) the men who "put" the bible together. We're told God (told) these men what to write.
The bible was written over a period of some 1,500 years, from around 1450 B.C. (the time of Moses) to about 100 A.D. (following the death and resurrection of Jesus Christ).
Personally speaking I have always been put off by the whole "canonization" process. A small group of men debating and deciding (what) books should be included in the bible and which ones to leave out. There should only be one story or (one) truth. It's either sunny or it's cloudy. The fact that there are several (denominations) of Christianity tells you they could not reach agreement!
Maybe there is some truth to the old saying: "God made man and man made religion". Either way I choose have a one on one relationship with God as opposed to joining the masses of people in organized religion watching priests and ministers fall from grace over and over again. Why follow anyone when you can reach God on your own? I've always been a bit of a "lone wolf". :-)